Agents of S.H.I.E.L.D. star Clark Gregg is among the first entertainment guests announced to headline Chicago Comic & Entertainment Expo (C2E2) 2019 at McCormick Place. Entertainment guests announced at the moment include Gregg, John Barrowman, Summer Glau, Christopher Sabat, and Sean Schemmel. On the comic book front, the early guests include Jason Aaron, Russell Dauterman, Matt Wilson, Eve L. Ewing, Ed McGuiness, Kevin Nowlan, George Perez, and Marc Silvestri. More guests are sure to be announced as the day moves…"C2E2 2019: First Wave of Guests Announced"